Ryuji, Rose and the others head off to go camping on an autumn weekend when a mysterious girl suddenly appears. She is Sapphie the blue dragon, with the ability to control water. She has come to avenge Onyx, her fiancee! Ryuji and Eriko fight Sophie off, but her words cast a shadow on everyone. Things get dangerous when Rose expresses great interest in finally meeting a dragon her own age.

Rose has been taken by Onyx. With Rose gone and the knowledge he hurt Rose, Ryuji passes his days as a shell of his former self. The dragon empress Maruga arrives to announce Onyx's dangerous intentions. When she forces Ryuji to make a decision, he finally finds a desire hidden deep within himself. However, Onyx and Sapphie already have plans to take the weakened Rose out of the country. The final battle for Rose is about to begin!

With Rose gone, Ryuji passes his days as a shell of his former self. The dragon empress Maruga arrives to announce Onyx's dangerous intentions. Ryuji finally finds himself and heads off for the final confrontation.